2021年05月20日 M13: The Great Globular Cluster in Hercules Image Credit & Copyright: Martin Dufour Explanation: In 1716, English astronomer Edmond Halley noted, “This is but a little Patch, but it shews itself to the naked Eye, when the Sky is serene and the Moon absent.” Of course, M1 […]
Using scientific instruments aboard a self-propelled ocean glider and several airplanes, this first deployment of the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) mission will deploy its suite of water- and air-borne instruments to ensure that they work together to show what’s happening just bel
对于新的太阳观测航天器来说，第一次太阳喷发总是特别的。 2021年2月12日，距离发射还有一年多的时间，欧洲航天局（ESA）和美国宇航局（NASA）的太阳轨道飞行器捕捉到了这一日冕物质抛射，或称CME。这张照片来自该任务的SoloHI仪器——太阳轨道日球成像仪的简称——该仪器可以观察太阳和行星之间的太阳风、尘埃和宇宙射线。 这是一个简短的、颗粒状的视图。太阳轨道飞行器的遥感要到11月才进入全面科学模式。SoloHI使用四个探测器中的一个，其频率低于正常频率的15%，以减少获取的数据量。尽管如此，敏锐的眼睛仍然可以发现突然爆发的粒子，即CME，正在逃离太阳，它在镜头的右上方。日冕物质抛射在视频的
2021年05月19日 The Jellyfish and Mars Image Credit & Copyright: Jason Guenzel Explanation: Normally faint and elusive, the Jellyfish Nebula is caught in this alluring scene. In the telescopic field of view two bright yellowish stars, Mu and Eta Geminorum, stand just below and above the Jellyfish N
As an atmospheric scientist, Jie Gong explores ice clouds and other frozen precipitation like snow, floating snow (which is snow in the atmosphere that does not hit the ground) and graupel, or hail. “I work on developing methods to best use satellite data to understand the microphysics of all
In this March 2021 image, Flight Research Inc.’s Bell OH-58C Kiowa helicopter hovered over a helipad after completing an urban air mobility (UAM) approach at NASA’s Armstrong Flight Research Center. The Advanced Air Mobility National Campaign used the helicopter as a representative vehicle to better
2021年05月18日 Jets from the Necklace Nebula Image Credit: ESA, Hubble, NASA; Processing: K. Noll Explanation: What celestial body wears the Necklace Nebula? First, analyses indicate that the Necklace is a planetary nebula, a gas cloud emitted by a star toward the end of its life. Also, what appears to
在瞥见了太阳外层大气中微弱但广泛存在的高温物质后，NASA的探测火箭正在返回寻找更多的物质。这一次，他们携带了一个经过优化的新仪器，可以在更大范围内观察太阳。 这项任务被称为极端紫外线正常入射光谱仪，或简称EUNIS，将从新墨西哥州的白沙导弹发射场发射。发射窗口将于2021年5月18日开启。 EUNIS是一个安装在探空火箭上的仪器套件，探空火箭是一种太空飞行器，在地球大气层上方进行短暂的飞行，然后返回地球。进入太空是很重要的，因为EUNIS在不穿透地球大气层的极紫外光范围内观测太阳。 接下来的飞行是EUNIS仪器的第四次飞行，该团队增加了一个新的通道来测量9至11纳米之间的波长。(可见光波长在
2021年05月17日 NGC 4565: Galaxy on Edge Image Credit & Copyright: CFHT, Coelum, MegaCam, J.-C. Cuillandre (CFHT) & G. A. Anselmi (Coelum) Explanation: Is our Milky Way Galaxy this thin? Magnificent spiral galaxy NGC 4565 is viewed edge-on from planet Earth. Also known as the Needle Galaxy for
2021年05月16日 NGC 602 and Beyond Image Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA) – ESA/Hubble Collaboration Explanation: The clouds may look like an oyster, and the stars like pearls, but look beyond. Near the outskirts of the Small Magellanic Cloud, a satellite galaxy some 20
